ESB-2018.3339 - [Appliance] F5 Traffix SDC: Execute arbitrary code/commands - Remote with user interaction 2018-10-31

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3339
             K23200408: reposync vulnerability CVE-2018-10897
                              31 October 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           F5 Traffix SDC
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Overwrite Arbitrary Files       -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-10897  

Reference:         ESB-2018.2910
                   ESB-2018.2620
                   ESB-2018.2205

Original Bulletin: 
   https://support.f5.com/csp/article/K23200408

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K23200408: reposync vulnerability CVE-2018-10897

Security Advisory

Original Publication Date: Oct 31, 2018

Security Advisory Description

A directory traversal issue was found in reposync, a part of yum-utils, where
reposync fails to sanitize paths in remote repository configuration files. If
an attacker controls a repository, they may be able to copy files outside of
the destination directory on the targeted system via path traversal. If
reposync is running with heightened privileges on a targeted system, this flaw
could potentially result in system compromise via the overwriting of critical
system files. Version 1.1.31 and older are believed to be affected. (
CVE-2018-10897)

Impact

Traffix SDC

When this vulnerability is exploited, the attacker can conduct a path traversal
attack and copy files outside of the destination directory on the targeted
system. If the reposync utility is running with elevated privileges, the
attacker can potentially overwrite critical system files resulting in a system
compromise.

BIG-IP, BIG-IQ, F5 iWorkflow, and Enterprise Manager

There is no impact; these F5 products are not affected by this vulnerability.

Security Advisory Status

F5 Product Development has assigned ID CPF-25005 (Traffix SDC) to this
vulnerability.

To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if your
release is known to be vulnerable, the components or features that are affected
by the vulnerability, and for information about releases or hotfixes that
address the vulnerability, refer to the following table. For more information
about security advisory versioning, refer to K51812227: Understanding Security
Advisory versioning.

+-------------------+------+----------+----------+----------+------+----------+
|                   |      |Versions  |Fixes     |          |CVSSv3|Vulnerable|
|Product            |Branch|known to  |introduced|Severity  |score^|component |
|                   |      |be        |in        |          |1     |or feature|
|                   |      |vulnerable|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |14.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|BIG-IP (LTM, AAM,  +------+----------+----------+          |      |          |
|AFM, Analytics,    |13.x  |None      |Not       |          |      |          |
|APM, ASM, DNS, Edge|      |          |applicable|Not       |      |          |
|Gateway, FPS, GTM, +------+----------+----------+vulnerable|None  |None      |
|Link Controller,   |12.x  |None      |Not       |          |      |          |
|PEM,               |      |          |applicable|          |      |          |
|WebAccelerator)    +------+----------+----------+          |      |          |
|                   |11.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|Enterprise Manager |3.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |6.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|                   +------+----------+----------+          |      |          |
|BIG-IQ Centralized |5.x   |None      |Not       |Not       |None  |None      |
|Management         |      |          |applicable|vulnerable|      |          |
|                   +------+----------+----------+          |      |          |
|                   |4.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|BIG-IQ Cloud and   |1.x   |None      |Not       |Not       |None  |None      |
|Orchestration      |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|F5 iWorkflow       |2.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |5.x   |5.0.0     |5.1.0     |          |      |reposync  |
|Traffix SDC        +------+----------+----------+High      |8.8   |utility   |
|                   |4.x   |4.4.0     |None      |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+

^1 The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.

Security Advisory Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Fixes introduced in column. If the table lists only an older version
than what you are currently running, or does not list a non-vulnerable version,
then no upgrade candidate currently exists.

Mitigation

None

Supplemental Information

  o K51812227: Understanding Security Advisory versioning
  o K41942608: Overview of Security Advisory articles
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K167: Downloading software and firmware from F5
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents

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